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Checking the connection with the external probe
After connecting the external probe to the boiler, use the INFO
function to check that the probe has been automatically recognised
by the temperature control card. Immediately after installation, the
PARAMETER
AVAILABLE IN THE PROGRAMMING MODE
TYPE OF BUILDING
3
INSTALLATION AND CALIBRATION & SERVICE
MAXIMUM HEATING SET POINT
21
INSTALLATION
MINIMUM HEATING SET POINT
22
INSTALLATION
ENABLE THERMOREGULATION FUNCTION
44
INSTALLATION
OFFSET TEMPERATURE CURVE
45
INSTALLATION AND CALIBRATION & SERVICE
TYPE OF HEAT REQUEST
51
INSTALLATION
To access the programming mode, consult “Programming
parameters”.
PARAMETER 03. Type of building
In order to calculate delivery temperature, the temperature control
system does not directly use the external temperature value but
considers the heat insulation of the building: in well-lagged
buildings, external temperature variations affect the ambient
temperature less than they do in badly-lagged buildings. Use
parameter 3 to set the heat insulation level of the building
according to the following scheme:
value read by the probe may very well be higher then that measured
by a reference probe.
Enable and optimise the THERMOREGULATION function by
setting the following parameters:
New houses
Old houses
Hollow bricks
Solid bricks
Stones
a
19
14
12
8
b
20
16
15
11
c
19
15
14
9
d
18
12
10
5
types of building
a
b
c
d
PARAMETERS 21 and 22. Maximum and minimum delivery
temperature
These two parameters limit the delivery temperature automatically
produced by the TEMPERATURE CONTROL function.
PARAMETER 21 deter mines MAXIMUM DELIVERY
TEMPERATURE (MAXIMUM HEATING SET POINT) while
PARAMETER 22 deter mines MINIMUM DELIVERY
TEMPERATURE (MINIMUM HEATING SET POINT).
PARAMETER 45. Choosing the offset temperature curve (graph 1)
The offset heating curve maintains a theoretical ambient
temperature of 20°C at external temperatures ranging from +20°C
to -20°C. The choice of the curve depends on the rated minimum
external temperature (on the geographical area, therefore) and
the rated delivery temperature (on the type of system, therefore)
and must be carefully calculated by the fitter using the following
formula:
PARAMETER 44. Enable thermoregulation function
The connected external temperature probe combined with
PARAMETER 44 provides the following operating modes:
EXTERNAL PROBE CONNECTED and PARAMETER 44 = 0 (OFF)
in this case the TEMPERATURE CONTROL function is disabled
even though the external probe is connected. The temperature
read by the external probe can always be viewed by pressing the
INFO button. The TEMPERATURE CONTROL symbols are not
displayed.
EXTERNAL PROBE CONNECTED, PARAMETER 44 = 1 (ON) in
this case the TEMPERATURE CONTROL function is enabled. The
temperature read by the external probe and the TEMPERATURE
CONTROL symbols can be viewed by pressing the INFO button.
The TEMPERATURE CONTROL function cannot be enabled
unless the external probe has been fitted and connected. In
this case, PARAMETER 44 is ignored and has no effect on
boiler operation.
If, from your calculations, you obtain an intermediate value between
two curves, we suggest choosing the compensation curve closest
to the value obtained.
Example: if the value obtained from the calculations is 8, this is
between curve 7.5 and curve 10. In this case, choose the closest
curve, which is 7.5.
rated delivery T - 20
P. 45 = 10 x
20- rated min. external T
PARAMETER 51. Type of heat request
IF AN AMBIENT THERMOSTAT IS CONNECTED TO THE BOILER,
SET PARAMETER 51 = 0 (graph 2).
The ambient thermostat makes a heat request when its contact
closes, while it stops it when its contact opens. Though delivery
temperature is automatically calculated by the boiler, the user may
manually override it. By modifying HEATING on the user interface,
the HEATING SET POINT will no longer be available but just a
value that can be set from +5 to -5°C as required. Modifications to
this value do not directly change delivery temperature but affect
the calculation made to automatically determine its value by
modifying the reference temperature of the system (0 = 20°C).
IF A PROGRAMMABLE TIMER IS CONNECTED TO THE BOILER,
SET PARAMETER 51 = 1 (graph 3).
When the contact is closed, the heat request is made by the delivery
probe on the basis of the external temperature in order to maintain
the rated ambient temperature at the DAY level (20 °C). When the
contact opens, it does not stop the heat request but reduces (parallel
shift) the temperature curve to the NIGHT level (16 °C). Though
delivery temperature is automatically calculated by the boiler, the
user may manually override it.
By modifying HEATING on the user interface, the HEATING SET
POINT will no longer be available but just a value that can be set
from +5 to –5°C as required.
Modifications to this value do not directly change delivery
temperature but affect the calculation made to automatically
determine its value by modifying the reference temperature of the
system (0 = 20 °C for DAY level; 16 °C for NIGHT level).
14 - SETTING THE THERMOREGULATION
